Since then, his ghost has been seen at regular intervals.

The big winners have come at almost regular intervals for the show.

And I went away to set up the program to power down the drive at regular intervals.

"But they could be set to do so at regular intervals."

The first visit had been highly successful and was followed at regular intervals by others.

We can check in at regular intervals, if that will Make you feel any better.

I tried at regular intervals throughout the night and first thing this morning.

It is therefore necessary to take stock of one's position at regular intervals.

Leave of absence was given to army men at regular intervals.

The rest of the hall had doors at regular intervals.